What does JSON → Go actually do?

JSON to Go emits struct types from a sample, with json tags. Types follow the sample: numbers often become float64, and a missing field is not marked omitempty just because it might be absent later. Names are exported and converted toward Go style.

When should I use JSON → Go?

Use it to sketch structs from a fixture.

When should I not use JSON → Go?

Do not treat every number as int. Check float64 versus int64.

What does JSON → Go not do?

One sample, one shape. Variants are not inferred. Does not compile the Go or run gofmt beyond the printer.

JSON → Go

Generate Go structs from JSON with JSON tags. snake_case keys become PascalCase. Free online — runs locally, no upload.

Root name

Pointers for nullsJSON tagsEmbed (no `type` keyword)

JSON Input

Go Output

snake_case keys are converted to PascalCase for Go field names. JSON tags preserve the original key so unmarshaling works. Null fields become pointers (*string, etc.) when "Pointers for nulls" is on.

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JSON → Go